1.8 Cyst

Overview:

Definition/Description

Cyst: a nodule consisting of liquid or semi-solid material surrounded by a capsule located in the dermis. Pseudocyst is different due to lack of capsule/epithelial wall.

Localization

May appear anywhere on body; can be solitary, localized or disseminated.

Eiga

May progress to infection, necrosis, ulcer or scar.

Typical Dermatoses

Epidermoid cyst, trichilemmal cyst, hidradenitis suppurativa, severe acne.

Pathophysiology

Retention of secretions (epidermoid cyst/trichilemmal cyst).

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